Local and Nonlocal Shot Noise in High-$T_C$ Superconducting Nanowires

Abstract

We obtain exact expressions for the local current and shot noise and the nonlocal shot noise in the first propagating channel of an NSN (normal-superconducting-normal) nanowire. Using high-$T_c$ cuprate superconductors (HTS) as our model systems we utilize a scattering theory approach to derive the scattering matrix for the systems in the high transparency limit and without the Andreev approximation. The local current and shot noise spectrum is calculated and plotted. In view of recent work in the area of cooper-pair splitting (CPS) devices, we investigate the nonlocal shot noise and relate the behavior of the noise as we change parameters such as the system size, the orientation of the order parameter and the biasing of the junction in the HTS NSN system.

25 pages, 9 figures

References in corpus (4)

• Near-unity Cooper pair splitting efficiency
• Reversing non-local transport through a superconductor by electromagnetic excitations
• Positive current cross-correlations in a highly transparent normal-superconducting beam splitter due to synchronized Andreev and inverse Andreev reflections
• Reversing the sign of current-current correlations

Cited by in corpus (1)

• Cross-correlated shot noise in three-terminal superconducting hybrid nanostructures